body{
    margin: 0px;/*body边缘留白为0*/
    user-select: none;
}
a{
    text-decoration: none;
    color: black;
}
.header{
    width: 100%;
    height: 80px;
    position: fixed;/*让该div固定在页面上*/
    z-index: 999;/*让该div显示在最前面，属性值越大显示越前*/
    background: rgb(255, 255, 255);
    margin-top: -120px;
    box-shadow: 0px 0px 10px #a0a0a0;
}
.header_ul{
    float: left;
    list-style: none;
    margin-left: 20px;
}
.header_ul li{
    margin-top: 0px;
    margin-left: 20px;
    float: left;
}
#xiazhanlan1{
    width:200px;
    height: 94px;
    position: relative;
    margin-left: -30px;
    margin-right: 30px;
    padding: 30px;
    padding-left: 0;
    background: #f6f6f6;
}

#xiazhanlan1 span{
    size: 5px;
    float: center; 
    color: #515151;
    font-size: 10px;
    margin-left: 45px;
}
#xiazhanlan2{
    width:230px;
    height: 80px;
    position: relative;
    margin-left: -30px;
    margin-top: 30px;
    text-align: left;
    background: #f6f6f6;
}
#xiazhanlan2 span{
    size: 5px;
    float: center; 
    color: #515151;
    font-size: 13px;
    margin-left: 45px;

}
#xiazhanlan3{
    width:230px;
    height: 80px;
    position: relative;
    margin-top: 30px;
    margin-left: -30px;
    text-align: left;
    float: left;
    background: #f6f6f6;
}
#xiazhanlan3 span{
    size: 5px;
    float: center; 
    color: #515151;
    font-size: 13px;
    margin-left: 45px;
}
#xiazhanlan{
    width:220px;
    height: 80px;
    position: relative;
    margin-top: 10px;
    margin-left: -30px;
    padding: 2px;
    float: left;
    background: #f6f6f6;
}
#xiazhanlan span{
    size: 5px;
    float: center; 
    color: #515151;
    font-size: 13px;
    margin-left: 45px;
}
#xiazhanlan:hover{
    background-color:#00b548;/*鼠标滑入变色hover */
    color: white;
    transition: all 0.25s;
}
#xiazhanlan1:hover{
    background-color:#00b548;/*鼠标滑入变色hover */
    color: white;
    transition: all 0.25s;
}
#xiazhanlan2:hover{
    background-color:#00b548;/*鼠标滑入变色hover */
    color: white;
    transition: all 0.25s;
}
#xiazhanlan3:hover{
    background-color:#00b548;/*鼠标滑入变色hover */
    color: white;
    transition: all 0.25s;
}
.production{
    position: absolute;
    height: 500px;
    width: 600px;
    display: flex;
    margin-top: 0px;
    margin-left: -50px;
    background: #fbfbfb;
}
/* 为子菜单设置各个属性，主要有宽度，内部位置，固定位置 */
.header_ul_ul_1{
    width: 200px;
    height: 400px;
    text-align: left;
    position: relative;
    margin: 0px;
    list-style: none;
    color:black;
    background: #fbfbfb;
}
.header_ul_ul_2{
    width: 200px;
    height: 400px;
    text-align: left;
    position: relative;
    margin-left: 40px;
    list-style: none;
    color:black;
    background: #fbfbfb;
}
.header_ul_ul li{
    margin: 10px 15px 10px -25px;
    float: none;
}
/* 将各个子菜单设置为隐藏 */
.production{
   display: none;
}

/* 设置为鼠标滑入显示 */
.header_ul_production:hover .production{
    display: flex;
    transition: all 2s;
}
.login{
    float: right;
}
#arrows{
    width: 10px;
    margin-left: 10px;
}
#xiazhanlan_im{
    width: 45px;
    display: inline;
}

.partfirst{
    margin-top: 120px;
    
}
.标题{
    font-size: 45px;
    font-weight: 1000;
    text-align: center;
}
.infor1{
  margin-top:-25px;
  text-align: center;
  font-size: 20px;
  color: #7e7e7e;
}
.part2{
    display: flex;
    justify-content: space-around;
    margin-top: 50px;
    text-align: center;
}

.partsecond{
    background: #f2f2f2;
    position: relative;
    margin-top: 30px;
}
.partsecondinfo{
    position: relative;
    display: flex;
    text-align: center;
    justify-content: center;
    margin-top: 100px;
}
.charac_1{
    position: relative;
    background: white;
    width: 600px;
    height: 720px;
    margin-right: 30px;
    margin-bottom: 100px;
}
.charac_2{
    position: relative;
    background: white;
    width: 600px;
    height: 720px;
    margin-bottom: 100px;
}
.sousuo{
    cursor: pointer;
    margin-left: 510px;
}
.loginreg{
    border: solid #424242 2px;
    border-radius: 6px;
    font-size: 15px;
    display: flex;
    justify-content: center;
    margin-top: -10px;
    padding-top: 10px;
    width: 100px;
    height: 30px;
    background: white;
}
.loginreg:hover{
    border: solid #2fc36a 2px;
    color: #2fc36a;
    transition: all 0.2s;
}
.download{
    border-radius: 6px;
    color: white;
    background: #00b548;
    height: 30px;
    width: 50px;
    margin-top: -10px;
    padding-top: 10px;
    padding-bottom: 4px;
    padding-left: 15px;

}
.download:hover{
    background: #00973c;
    transition: all 0.2s;
}
.partthree{
    background: #00b548;
    display: flex;
    margin-bottom: 50px;
}
.partthree_download{
    margin-top: 10px;
    border-radius: 6px;
    color: #00b548;
    width: 150px;
    height: 55px;
    background: white;
    text-align: center;
    padding: 5px 22px;
}
.partthree_download:hover{
    background:#f0f0f0 ;
    padding: 10px 30px;
    transition: all 0.2s;

}
.partlast_1 a:hover{
    color: #00b548;
    transition: all 0.2s;
}
